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-rw-r--r--Documentation/scsi/ncr53c8xx.txt25
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diff --git a/Documentation/scsi/ncr53c8xx.txt b/Documentation/scsi/ncr53c8xx.txt
index 1d508dcbf859..8586efff1e99 100644
--- a/Documentation/scsi/ncr53c8xx.txt
+++ b/Documentation/scsi/ncr53c8xx.txt
@@ -786,7 +786,6 @@ port address 0x1400.
irqm:1 same as initial settings (assumed BIOS settings)
irqm:2 always totem pole
irqm:0x10 driver will not use IRQF_SHARED flag when requesting irq
- irqm:0x20 driver will not use IRQF_DISABLED flag when requesting irq
(Bits 0x10 and 0x20 can be combined with hardware irq mode option)
@@ -1231,30 +1230,6 @@ they only refer to system buffers that are well aligned. So, a work around
may only be needed under Linux when a scatter/gather list is not used and
when the SCSI DATA IN phase is reentered after a phase mismatch.
-14.5 IRQ sharing problems
-
-When an IRQ is shared by devices that are handled by different drivers, it
-may happen that one driver complains about the request of the IRQ having
-failed. Inder Linux-2.0, this may be due to one driver having requested the
-IRQ using the IRQF_DISABLED flag but some other having requested the same IRQ
-without this flag. Under both Linux-2.0 and linux-2.2, this may be caused by
-one driver not having requested the IRQ with the IRQF_SHARED flag.
-
-By default, the ncr53c8xx and sym53c8xx drivers request IRQs with both the
-IRQF_DISABLED and the IRQF_SHARED flag under Linux-2.0 and with only the IRQF_SHARED
-flag under Linux-2.2.
-
-Under Linux-2.0, you can disable use of IRQF_DISABLED flag from the boot
-command line by using the following option:
-
- ncr53c8xx=irqm:0x20 (for the generic ncr53c8xx driver)
- sym53c8xx=irqm:0x20 (for the sym53c8xx driver)
-
-If this does not fix the problem, then you may want to check how all other
-drivers are requesting the IRQ and report the problem. Note that if at least
-a single driver does not request the IRQ with the IRQF_SHARED flag (share IRQ),
-then the request of the IRQ obviously will not succeed for all the drivers.
-
15. SCSI problem troubleshooting
15.1 Problem tracking